reduced in ethereal solvents, and the resulting paramagnetic solutions have been examined by multiple resonance techniques. The values and relative signs of the various coupling constants proved useful and unambiguous in ascertaining the position of ring substitution in the starting material. These methods have therefore proved to be an alternative, if rather specialized means to determine which of several
在醚溶剂中还原了一系列取代的10,10-二苯基
菲咯啉9(10 H)-one,并且通过多种共振技术对所得的顺磁溶液进行了研究。事实证明,各种偶联常数的值和相对符号在确定起始原料中环取代的位置时是有用且明确的。因此,这些方法被证明是一种替代方法,即使是确定存在几种异构化合物中哪一种的专门方法。